Shaping-machine.



s No. 791,225.

UNITED STATES Patented. May 30, 1905.

PATENT OFFICE.

JAMES C. STEEN, OF CINCINNATI, OHIO, ASSIGNOR TO THE CINCINNATI SHAPERCOMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

SHAPING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 791,225, dated May 30,1905.

Application filed April 13, 1904.. Serial No. 202,944.

To all whom, it may concern: I

Be it known that I, JAMEs C. STEEN, a citizen of the United States, anda resident of Cincinnati, in the county of Hamilton and State of Ohio,have invented a certain new and useful Improvement in Shaping-Machines,of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, which form a part ofmy specification.

My invention relates to shaping-machines, and more particularly to thetool-carrying head thereof. Its object is to prov'de a head which isadapted to plane or mill out concave cylindrical surfaces and which isconnected with mechanism by which the circular feed of the tool maybevaried at will, but always maintained constant at the rate of feeddetermined upon. Its advantages will appear as I proceed with myspecification. c

In the drawings, Figure 1 is a side elevation of my invention shownpartially in vertical section. Fig. 2 is a section through the same onthe line 2 2 of Fig. 1

A is the bed of the sha ing-machine, B the ram, and C the tool-head Thehead C comprises an outer casing of sleeve O, which is rigidl secured tothe ram, and a tool-holder swive D, which extends the lengthof saidsleeve or outer casingC and is suitably j ournaled therein so as to haveno longitudinal play. The tool E is adjustably secured to the end of thetool-holder swivel D below its center in any convenient and usualmanner.

It is apparent that an intermittent rotation of the tool-holder swivelat each reciprocation of the ram will cause the tool to drive over aconcave cy-indrical surface. This is produced as follows: At the innerendof the swivel D a worm-wheel D is secured. The inner end of thecasing 0 above the wormwheel is provided with a journal-box F, in whichworks a worm G, mounted on a shaft G. One end of the shaft G projectsbeyond the journal F. Loosely mounted on the pro-' jection of the shaftG is a rocker c, carry1'ng the spring-controlled reversible pawl b,whichnormally engages with a ratchet-wheel a,

keyed to the shaft G. Loosely mounted on a boss on the end of thejournal-box is a sleeve cl, having a projecting'flange d, which coversthe teeth of the ratchet-wheel wexcept for a short distance, where itleaves it exposed to the action of the pawl b. A depending arm 6 isloosely mounted on the end of the shaft G and is adapted to en age withextending lugs e e on the end of t e rocker a, so that the rocking ofthe arm e will be communicated to the rocker c. A bracket j, carryin apin f is adjustably mounted on the bed- Iate of the machine. Theconstruction and arrangement of the rocker-arm, ratchet-wheel, andsleeve is substantially like that described in Letters Patent N 0.656,795, granted to Steen and Warner, and its operation is a parent fromthe drawings.

It is evident t at as the ram reciprocates backward and forward the arm6 will be struck by the pin f and the shaft G intermittently rotated bymeans of engagement of the pawl b with the ratchet-wheel a and that theamount of this rotation at each stroke and its direction is controlledby the adjustment of the sleeve (2 and the pawl 12, as described in thepatent referred ,to. The rotation of the shaft G will of course throughthe worm G cause the worm-wheel D to rotate, and with it the tool-holderswivel D. The tool will thus be caused to travel over a concavecylindrical surface, the rate and direction of its circular feed beingdetermined by the positions of the sleeve d and the pawl b. The shaft Gis preferably provided with a hand-wheel K for quick angular adjustmentof the swivel.

Having thus described my invention, what I desire to claim as new and tocover by Letters Patent is' 1. In a shaping-machine, in combination withthe bed-plate and ram, a tool-head comprising an outer shell or casing,and a toolholder swivel journaled therein, a worm-gear keyed to saidswivel, a worm journaled on said outer casing in engagement with saidworm-wheel, and mechanism intermediate the bed-plate andsaid worm-shaft,adapted to intermittently rotate said swivelupon the reciprocation ofthe ram, substantially as described.

2. In a shaping-machine, in combination with the bed-plate and ram, atool-head comprising an outer shell or casing and a tool-holder swiveljournaled therein, a wormgear keyed to said swivel, a worm journaled onsaid outer casing in engagement with the said worm-wheel, aratchet-wheel keyed to'l said worm-shaft, a rocker-arm j ournaled onsaid shaft, a spring-controlled pawl carried by said rocker-arm, adaptedto engage said ratchet-Wheel, means for regulating the effective throwof said rocker-arm, and mechanism intermediate said rocker-arm and saidbed-plate adapted to rock the same upon the reciprocation of said ram,substantially as described.

J AMES C. STEEN.

